Typewriting machine



Jan. 16, 1934. c. GABRIELSON TYPEWRITING MACHINE 4 Sheets-Sheet l FiledApril 22, 1951 RM Ov E T .N m m .n .IM A

Jan. 16, 1934.

C. GABRIELSON TYPEWRITING MACHINE Filed April 22, 1951 4 Sheets-Sheet 2ATTORNEYS Jan. 16, 1934. c. GABRlELsoN TYPEWRITING MACHINE `Filed April22, 1951 4 sheets-Sheet s Jan- 16, 1934- c. GABRlELsoN TYPEWRITINCYMACHINE Filed April 22, 1931 4 Sheets-Sheet 4 INVENTOR w1 GabriZm/Z/ MQWATTORNEYS' Patented Jan. 16, 1934 TYPEWRITING MACHINE Carl Gabrielson,Syracuse, N. Y., assignor to L C Smith & Corona Typewriters Inc.,Syracuse, N. Y., a corporation of New York Application April 22, 1931.

17 Claims.

This invention relates to improvements in typewriting machines and moreparticularly to typewriting machines for typing stencil cards.

In typing stencil cards it is frequently desirable to print through aninked ribbon upon the upper transverse portion of the cardboard framepart of the card and to type on the window or stencil sheet part of thecard without an interposed inked ribbon. An object of the invention isto provide a machine to facilitate such typing of stencil cards.

These stencil cards also commonly have the. window or stencil portionthereof inset from the planes of the'A front and rear faces of theircardboard frames, and 'their cardboard frames are quite stiff. Theinvention includes provisions for typing such a card while flat, orWithout bending the same, and for automatically causing the card to beefficiently backed by the platen along the line of. typing both whiletyping on the frame part of the card and on the stencil sheet part ofthe card.

It is a common practice to ink the characters `typed on the stencilsheet part of the card by means of a carbon or other inked sheet or webinterposed between the card and platen, and the present inventionincludes provisions for inkingthese characters while at the same timepreventing smutting of the back of the card during insertion andremoval, preventing printing on the back of the card during typing onthe cardboard frame part thereof, and so feeding the carbon sheet or webas to avoid Waste thereof while at the same time affording an automaticfeed of the carbonweb to efficiently and uniformly ink the characterstyped on the stencil sheet portion of the card. The invention alsoincludes provision for autoe matically conditioning the machine to typeupperv case characters when the card is positioned for typing on theupper marginal part thereof, i. e.

during typing on the upper transverse portionk of ,its cardboard framepart, this being desirable as the data thus typedis intended for quickidentication of the card.

The inventionv also includes provision of means for accomplishing theforegoing ends which may be readily embodied in existing machines, theprovision of an improved card-holding frame, and the provision of ashort platen for backing the card which may be readily removed when wornand a new platen inserted without deranging the card-handling means.

Other features and advantages will hereinafter appear.

Serial No. 531,993

A preferred embodiment of the invention is illustrated, the improvementsbeing incorporated in an L C Smith typewriter, and only so much of thetypewriter being shown as is necessary for a full understanding of theinvention.

In the drawings:

Fig. 1 is a fragmentary side View of the machine conditioned for theinsertion of a stencil card;

Fig. 2 is a detail view showing one end of the 05 card-holding frame andadjacent parts of the supporting and guiding means for the frame indetached relation;

Fig. 3 is a fragmentary sectional view on the une 3 3 of Fig. 7, withthe card-holding frame 70 fully elevated as in Figfl.

Fig. 4is a fragmentary sectional view on the line 4 4 of Fig. 5 with thecard holding frame fully elevated;

Fig. 5 is a fragmentary front elevation of the 75 machine, conditionedas in Figs. 1, 3 and 4, but with the card-holding frame indicated onlyin part and by broken lines at the right of the view;

Fig. 6 is a front view of the card-holding frame with a. stencil. cardheld therein, this view being on the same scale as Fig. 5;

Fig. '7 is a fragmentary plan-view of the machine with certain partsbroken away and the card-holding frame in fully lowered position;

Fig. 8 is a fragmentary sectional view on the 85 line 8 8 of Fig. 7;

Fig. 9 is a fragmentary sectional view on the line 9-9 of Fig. '7;

Fig.' 10 is a fragmentary sectional view on the line 10--10 of Fig. 7)the platen being indicated 90 only by a broken line to avoid obscuringof certain .operating parts; Figs. 11 and 12 are detail views showing,re-

spectively the line spacing mechanism conditioned as in Fig. l1 and asat the end of the first 95 operating stroke of the line space pawl; and

Fig. 13 is a View similar to Fig. 10 showing a type bar acting on thestencil sheet part of the card in an intermediate position of the cardframe between its fully elevated and fully lowered positions, theparticular position shown being that occupied by the card holding frameduring typing of the second of the three lines indicated on the windowportion of the card in Fig. 6.

The oblong stencil card has the usual relatively thick cardboardmarginal or frame part 1 with the'usual vthin stencil paper or windowlpart 2 held therein in a plane disposed substantially medially of theplanes of the front and rear faces of the frame.

The card-holding frame comprises two sheet metal members 3 and 4 ofsubstantially U-shape arranged face to face in inverted relation withthe side parts of the front member extending upwardly in front of theside parts of the rear member which` extend downwardly, said side partsbeing spaced a distance corresponding with the card frame thickness byinwardly extending anchor anges 5 of two vertically extending metalracks 6 of the teeth of which face rearwardly. The racks are locatedbehind the side parts of the front member 3 at the outer side edges ofthe side parts of member 4, and rivets 7 extend through the anchorflanges and side parts of members 3 and 4 to hold the frame parts andracks in assembled relation. The central opening through thecard-holding frame is oblong and corresponds substantially in size andshape with the window portion 2 of the card to be held in the frame, thetransverse portion of frame member 3 having a rearwardly extendingflange l8 along its lower edge forming a seat for the lower edge of acard fully-inserted in the frame. The transverse part of member 4 coversthe rear face of the upper transverse part of the cardboard frame of acard so inserted n the card-holding frame to prevent offset printing onthe Vback of said part of the card frame as hereinafter explained. *Y

A platen roller 9 is provided for backing a stencil card being typed,the length of said platen roller being preferably less than the lengthof the window of the stencil card and also than the distance between theinner edges of the side parts of rear member 4 of the card-holdingframe, as shown in Fig. 7 and indicated by a comparison of Figs. 5 and6.

The machine has a main frame 10 on the upper rear part of which theplaten carriage 11 is supported on suitable ball bearings in the usualway to travel transversely of the machine, the letter feed of thecarriage being controlled by the usual escapement not shown. In the L CSmith machine shown the type bars 12 are mounted in a type segment 13 tostrike on the upper front portion of the platen, the .segment beinginclined slightly upward and rearward and held up by a spring 14 inposition to normally print lower case characters and shiftabledownwardly in the plane of the type bar pivots by a shift key lever 15to print upper case characters, the latter characters being thosenearest the free ends of the type bars. The type bars are actuated fromthe keyboard by the usual connections not shown. The machine is alsoprovided with an inked ribbon 16 and also with the usual ribbon feedmeans not shown. The usual line spacing pawl 17 and operating meanstherefor, including the oscillatable line space handle 18 (a fragmentonly of which is shown) for moving the pawl rearwardly on its spacingstroke, are mounted on the carriage in the usual manner as shown4 inFigs. 1 and 7.

In the present machine, in lieu of the us long platen and associatedpaper feed devices, special means are provided for handling and backingstencil cards and a carbon web, which means will now be described.Spaced inwardly equal distances from the adiaoent ends of the carriageare two sheet metal frame plates 19 lying in vertical fore-and-aftplanes and having anchor portions 20 secured by fastenings 21 to thetabulator stop bar 22 which is rigidly mountedon the can'iage. in theusual manner. 'Ihese plates are connected by a tie bar 23 secured totheir anchor portions and by a paper apron 24 extending from one plateto the other and having lugs on its side edges fastened to the plates byscrews 25. Preferably also, said plates are supported by the inner'endsof two members 26 extending inward from opposite ends of the carriageand engaged at their inner ends in notches 27 in said plates.

A shaft 28 extends through the usual open-top platen shaft .bearing inthe right hand end of the carriage and a sleeve 29 extends through thecorresponding opentop bearing in the left hand end of the carriage, theopen tops of these bearings being closed by the usual slides 30.- Theframe plates 19 are provided with bushings 31. Shaft 28 extends throughthe bushing of the right hand frame,plate, while sleeve 29 extendsthrough the bushing of the left hand plate, and said sleeve and shaftare held against endwise movement. Shaft 28 is free to oscillate aboutits axis, the extent of rotary movement of the shaft being limited bymeans hereinafter described, and sleeve 29 is locked against rotarymovement by a set screw 32 threaded through the Ibushing 31 of left handframe plate 19. A shaft 33 extends through sleeve 29 and is normallypressed inward by a coiled spring 34 to a limit determined by a stop nut35 threaded on said shaft and is adapted to be pulled outward by a. knob36 on the outer end of the shaft.

Shafts 28 and 33 have respectively reduced inner cylindrical bearing endportions 37 and 38 on which the short platen roller 9 is supportedcentrally between frame plates 19. Bearing portions 37 and 38 have aloose or nonbinding fit in axial bearing passages in the ends of theplatenroller 9, and shaft 33 is adjusted endwise by nut 35 so that theshoulders at the outer ends of these reduced bearing vportions of theshafts will not bind against the ends of the roller and frictionallylock the platen to the shafts. The parts are. so proportioned that shaft33 may be pulled out far enough to permit uncoupling the platen fromboth its bearings so that the platen may be removed from between theplates and a different platen inserted when desired.

At the inner ends of bushings 31 of the plates 19 there are mounted twocompanion mutilated gears or duplex gear segments 39 one of which hasits hub locked to shaft 28 by a screw 40 and the other of which has itshub rotatable on sleeve 29 and held against axial movement thereon byscrew 41 projecting into a circumferential channel in the sleeve.Confined between the inner end of each bushing 31 and the adjacent faceof each gear 39 are companion cam plates 42 preferably having forksembracing in one case sleeve 29 and in the other case shaft 28 (as shownin Figs. 7 and 9) and locked to the adJacent sectors 39 in the samerotatively adjusted relation thereto by clamping screws 43. Screw 43 foreach cam extends through a slot in the adjacent sector and is threadedinto the cam. Each cam has a nose portion 44 and these cam noses projectradially beyond the crest circle of the teeth of the mutilated gears ordouble segments 39. Gears 39 are connected to oscillate .in unison by ahorizontal shaft'45 extending behind the platen and rotatably supportedinvbearings carried by plates 19, there being two pinions 46 fixed onshaft 45 and meshing with gears 39. It will of course beunderstood thatgears 39 may be complete gear wheels but they are preferably cut away attwo points as `lower end tov the platen carriage. lator has an arcuateflange 65 overhanging the 13. These slides are each supported and guidedby a pair of fore-and-aft spaced screws 48 tapped in the adjacent frameplate 19 and extending through longitudinal guide slots in the slide andn also by a pair of superposed card-holding frame guide studs 49 xedlyheld to the slide adjacent the forward end of the slide and extendinginwardly through guide slots in the adjacent frame plate 19. The slidesare provided with clearance slots for shaft 28 and sleeve 29respectively as indicated in the case of the right hand slide in Fig. 3.Studs 49 have transverse guide slots 50 across their inner ends lying inthe same plane, which plane is parallel with the plane of the type barsegment and the type bar pivots in the segment, and the side edges ofmember 3 of the lcard-holding frame have a snug sliding fit in said studslots While the rack members 6 of the card-holding frame mesh with thegears 39.

The slides 47 are constantly urged rearward by springs 51 parts of whichpress rearwardly against studs 52 extending inward from the slidesthrough clearance slots in the frame plates 19, thus yieldably holdingthe racks and gears in mesh and permitting bodily movement of thecard-holding frame perpendicular to the plane of the segment in additionto its up and down movement parallel to said plane. The extent ofrearward movement of the slides and card-holding frame is limited by theengaged teeth of the gears and racks and the extent of forward movementis limited by engagement of stop screws 53 held to the slides with theforward ends of slots 54 in frame plates 19. Stop screws 53 arrestforward movement of the card-holding frame before the racks 6 are fullydemeshed from the gears 39 to prevent accidental derangement of theparts.

Gears 39 oscillate in unison with shaft 28 on the outer end of which isfixed an operating hand crank 55. Also fixed on shaft 28, Figs. 11 and12, is a line-space ratchet wheel 56 with which linespace pawl 17 iscoactive to rotate shaft 28 in linespacing direction. -An automaticline-space regulator or varying device 57 loose on shaft 28 isfrictionally held to the outer face of the line space ratchet wheel by aspring washer 58 mounted on the shaft and interposed between regulator57 and a suitable abutment 59 on the shaft. The washer frictionallylocks the regulator to oscillate in unison with the ratchet wheelbetween limits determined by the engagement of one or the other of twospaced fingers 60 and 6l thereon with a suitable fixed stop extendingbetween the fingers, which stop in the construction shown is-the bearing62 of the ratchet wheel detent roller 63 at the upper end of a stiffspring detent roller supporting arm 64 fixedly held at its The reguteethof the ratchet wheel 56 and adapted to act as a shield at one limit ofoscillation of the regulator to prevent engagement of the line-spacepawl in tooth spaces of said wheel as hereinafter explained during partof the working stroke of the pawl. 'e n A spool 66 has a roll of carbonpaper 67 thereon and this spool is journalled on the reduced inner endsof two shafts 68 and 69 supported on the frame plates 19. These shaftssupport the spool between plates 19 and above and to the rear of theplaten 9, shaft 68 being fixed and shaft 69 extending through a sleeve72 fixed on one of the plates 19 and being normally pressed inward by aspring 70 and adapted to be pulled out far enough for insertion andremoval of carbon spools `by means of a knob 71 on its outer end. Thepaper `wound on the spool may be partly enclosed by a sheet metal guard73 of arcuate crosssection riveted to bar 23 with its open side at thefront and by a pendent tongue 74 at the front of the spool held to acover plate 75. Cover plate 75 is fixed at its rear end to a yoke 76pivoted at 77 to anchor portions 20 of plates 19, and said cover plateextends forward over the spool and has its front portion bent downwardto normally rest on top of the platen 9. By swinging up the cover plateeither the carbon roll or platen roll may be removed when disconnectedfrom their bearings.

The 'carbon paper is led down from the supply spool between the sidearms 78 of a feed roll frame and under the platen, then up rin front ofthe platen past the printing line, after which it is passed under acarbon-paper feed roll 79 journalled in the side arms 78 just in frontof the forward edge of the cover plate. Preferably a tearing-oli knife80 is held on the cover plate and the carbon paper is led between thisknife and the plate and feeds over the platewhich forms a table orapronsupporting the leading used portion of the carbon paper until it is tornofl". Side arms 78 are fixed on a rock shaft 81 which is journalled inplates 19 and preferably has rotatable sleeves 82 thereon contacting thecarbon paper, the uninked side of which paper is next the platen wherethe carbon paper is led around the platen. lThe feed roll is held to theplaten by a coiled spring 83 secured at its lower end to the left handplate 19 at 84 and attached at its upper end to the lower end of a bowedlink 85 the upper end of which is pivotally connected to an upwardly andforwardly extending arm 86 xed on shaft 81, the arrangement being suchthat the feed roll frame will be held up by the spring when raised tovertical position to facilitate renewal of platen 9 and initialthreading of the carbon paper through the machine.

.The shaft 28 has a one-way driving connection with the rplaten roller 9adapted to drive the platen with the shaft only when the shaft isrotated in line spacing direction and means are provided whereby theplaten is only so driven during part of the line-spacing rotation of theshaft. A spring-,pressed platen driving pawl 87 is pivoted on the outerend of a rock arm 88 fixed on shaft 28 and this pawl is normally urgedby its spring into the teeth of a fine-toothed platendriving ratchetwheel 89 having a hub 90l loose on shaft' 28. A toothed detent wheel 91is fixed on the inner end of hub 90 and positively clutched to theadjacent end of the platen by a sliding pin 92 pressed out through abore in the platen by a spring 9 3 and engaged in one of an annularseries of sockets 94 in the adjacent face of the detent wheel. A springdetent 95 held to the apron 24 engages in tooth spaces of wheel 91 toprevent reverse rotation of the platen and the wheels 89 and 91. A fixedguard or regulator 96 held to4 apron 24 holds pawl 87 out of engagementwith wheel 87 during part of the throw 'of arm 88.

The usual type bar guide 98 is fixed as usual changing. The usual ribbonguide 99 for ribbon 16 is provided and is slidably guided on the typebar guide as usual to move up and down to cover and uncover the printingpoint on the platen. In Fig. 13 the upper portions of the type bar guideand ribbon guide are broken away. The

usual ribbon guide vibrating means is omitted, however, and the lowerend of the ribbon guide is pivotally connected with the forward end of alever 100 pivoted midway its ends on a fixed part of the main frame 10at 101. The rear end of lever 100 is pivotally connected with the lowerend of vertical plunger 102 guided in the main frame and normallypressed upward by a coiled spring 103 engaged under a head of theplunger in which is journalled a bearing roller 104. A rock shaft 105journalled in plates 19 has a pair of rearwardly extending side arms 106connected at their rear ends by a rod 107, which engages over roller 104at all points in the platen carriage travel.

Arms 106 engage under apron 24 to limit upward movement of the plungerand arrest descent of the ribbon guide at a point where the ribbonuncovers the printing point of the platen. The left hand side arm 106has an upstanding finger or extension 108 at its rear passing through aclearance aperture in apron 24 and located in the path of travel of thenose of a cam 109 xed on the hub of the left hand gear 39. This cam isadapted to depress side arms 106 and connecting rod 107 and therebyforce plunger 102 downward far enough to raise guide 99 until the ribbon16 covers the printing point.

When crank handle 55 is rocked rearward, regulator 57 moves with ratchetwheel 56 until nnger strikes stop 62, after which the wheel continuesturning until further rearward movement of the handle is prevented byengagement of a stop pin 97 on wheel 56 with one edge of the regulator,as shown in Fig. 1.

In this position of handle 55, as shown in Figs. 1, 3, 4 and 5, thecard-holding frame is in its highest and most forward position with itsracks 6 partially demeshed from gears 39, the slides 47 being held atthe forward limit of their movement by the engagement of noses 44 ofadjustable cams 42 with the flat or non-toothed terminal portions 6a ofthe racks. In this position 'the card-holding frame is parallel to butslightly forward of a plane which is tangent to the platen at theprinting point and parallel to the plane of the segment and the plane ofthe type bar pivots,

so that a previously typed stencil card may bev pulled up out of theframe or a card to be typed may be pushed down into the frame withoutdanger of Contact of the card (and especially its cardboard frame part)with the forwardly facing inked side of the carbon web 67. The sideedges of anchor flanges 5 of racks 6 are spaced to coact with the sideedges of a stencil card to prevent lateral shift of the card in theframe 3 4, and flange 8 supports the card and positions it verticallyrelatively to the frame 3 4. The lower line of the opening through thecard-holding frame and the lower edge of the stencil card window arejust below the printing line of the platen in the full raised positionof frame 3 4.

A card having been inserted downward in the holding frame, it ispositioned for beginning of typing by pulling handle 55 forwardly as faras possible, this forward handle movement being limited by theengagement under a stop finger 11o, on the right hand slide 30, of astop finger 111 xed on the handle hub. This movement of the handlepositions the parts as shown in Figs. 7, 8, 9 10, and 11, with thecard-holding frame so lowered that the transverse bar-like portion ofthe rear part 4 of the frame covering the printing line of the platenand tangent to the platen at the printing line, so that this bar-likepart of the frame is backed up or contacted by the platen along theprinting line and shields the upper cardboard margin of the card fromcontact with the carbon web.

In this fully lowered position of the frame 3 4 the upper marginalportion of the stencil card is in front of the printing line of theplaten for typing thereon of a line of characters, and slides 47 arepushed forward substantially to the forward limit of their travel by thefull meshing engagement of each gear 39 with the upper ones of a shortseries of rearwardly advanced teeth 6b at the upper end of theassociated rack 6. Also, cam 109 is rocked rearward so that its end orlnose has pushed and held down finger 108 and plunger 102, therebyelevating and holding up the ribbon guide with inked ribbon 16 coveringthe printing point. The automatic line space regulator 57 has beencarried to the opposite limit of its movement so that line-space pawl 17may (upon actuation of handle 18) move immediately into the tooth spaceat the rear edge of shield flange without first riding over the shieldflange. The platen driving pawl has been carried forward until it restson shield 96 three tooth spaces from the free or rear edge of shield 96.The throw of pawl 17 (as shown in Figs. 1l and 12) is such as to rotateshaft 28 and ratchet 56 a distance of three single line spaces or threetooth spaces of ratchet 56 and detent wheel 96. The lowering of thecard-holding frame has also caused flange 8 thereof to engage anadjustable abutment member 112 mounted on the type-bar guide 98 anddepress the shiftable type-bar segment 13 to upper case printingposition and hold it there.

Upon actuation of character keys upper case characters on type-bar 12will print through the inked ribbon on the upper cardboard marginalportion of the stencil card. InFig. 6 a row of such characters isindicated by repetition of the character X.

Whenthis line of typing is completed the card is positioned for typingthe first line of an address or other matter upon the stencil paper orwindow Y portion of the card by a single operation of the line-spacehandle 18 which carries the pawl 17 on the working stroke from theposition shown in Fig. 11 to that shown in Fig. 12. The regulator 57moves with ratchet 56 two tooth spaces and is then arrested by finger 60while the pawl continues to drive the ratchet a third tooth space. Theregulatoris thus set automatically to hold the pawl out of the ratchetthereafter for part of its working stroke and cause the pawl to rotatethe ratchet but a single space at a time for each subsequent operationof the handle 18. The three space advance of shaft 28 elevates thecardholding frame a three line-space distance for typing on the windowportion of the stencil card well below its upper edge; disengages cam109 from nger 108 to allow plunger 102 to lower the ribbon guide andribbon automatically below the printing point so that types may directlystrike the stencil paper; advances the platen driving pawl to a point atwhich it just drops off the shield 96 into engagement with ratchet 89,thereby conditioning the platen driving means to v ing up and downmovements thereof.

drive the platen onsubsequent 'operations of the line-space handle 18but without rotating the platen or feeding the carbon paper forwardduring the three-space line-space jump of the card and card-holdingframe; raises the card- `holding frame high enough to disengage flange 8and abutment member 112 and permit spring 14 to restore the shiftablesegment 13 to normal lower case printing position; and carries the teeth6b up out of mesh with gears 39 so that springs 51 were permitted toshift kslides 4'7 to the rearward limit of their travel and draw thecard-holding frame bodily rearward as it was line-spaced upward. Thisrearward limit of movement of the slides vpositions them for guiding thecard-holding frame to slide up and down in a plane in which the windowportion of a card in the frame is tangent to the platen at the printingline (as will be inked on the rear face of the window by the carbon web.The card-holding frame may be line-spaced upwardly a single space at atime for typing additional lines of single-spaced writing on the windowportion of the card and on each such line-space advance of thecard-holding frame and card the platen will also be linespaced a singlespace to correspondingly .ad/Vance the carbon web 67 which is preferablya cheap socalled one time carbon paper web. Three lines of such typingare indicated on the card window in Fig. 6, and in Fig. 13 the card ispositioned for typing the middle one of these three lines.

After the typing of the address is finished the card-holding frame maybe line spaced to card removing position, or be quickly elevated to thecard-removing position (heretofore described) by throwing crank 55 tothe rearward limit of its movement. During the latter part of thismovement of the frame cams42 engage rack portions 6a and push the frameand slides 47 forward for `the purpose heretofore described.

It will be observed that the platen is rotated in one direction only, isrotated a single linespace distance at a time, and is rotated onlyduring spacing between lines of typing inked by the vcarbon paper, i. e.between lines of typing on the window portion of the card. It will alsobe observed that the card is always held flat in a plane parallel withthe plane of the type segment and the plane of the type bar pivots andis `advanced toward and from the platen dur- Shaft 33 may be releasablylatched against outward pull by a finger 113 on the left hand.

slide 30, which finger may lbe retracted yfrom in front of a base flangeon, nut '35, when it is desired to remove the platen, by sliding saidslide 30 rearward. A pair of finishing plates 114 may be secured to thecarriage 11 at the outer sides of' plates 19 if desired, said plates 114being curved similarly toapron 24 and extending for ward to parts 26ofthe carriage 11.

What I claim is:

1. In a stencil card typing machine, the combination of means for4positioning a card for rtyping initially upon the upper marginal part ofthe card, means for line-spacing the card, and web feeding means forconstantly maintaining a carbon web extended across the printing line atthe reverse face of the card and feeding said web only upon actuationsof said card linespacing means following typing of an initial line onthe card below the upper marginal portion of the card.

2. In a stencil card typing machine the combination with a platen, ofmeans for positioning the upper marginal portion of a stencil card infront of the platen for typing on said card portion, manually operablemeans for line-spacing the card upwardly a single wide space jump toposition its window yin front of the platen and thereafter a series ofnarrower spaces of equal extent for typing successive lines on thewindow portion of the card, and means including the platen actuated bysaid line-spacing means for presenting a carbon web between the card andplaten and feeding said web endwise in one direction only and onlyduring actuations of said line-spacing means which follow said widelinespace jump of the card.

3. A stencil card typing machine having a card holding frame, a platenof less length than the width of the window portion of the frame, andmeans for shifting the frame edgewise across the printing line of theplaten and also transversely of the path of edgewise movement of theframe into and out of a position in which a segment of the platenincluding the printing line is embraced within the frame.

.4. In a front strike typewriting'machine, the combination of a platen,key actuated types coactive with the front portion of the platen, a cardholder, and means for shifting the card holder relatively to the platen,said means being coactive with the cardholder to reciprocate the holderbodily edgewise up and down in front of the platen and to reciprocatesaid card holder bodily facewise first toward and then from the platenduring both the downward and the upward edgewise movements of the cardholder.

5. In a typewriting machine, the combination of a platen, types coactivewith the platen, a letter feed carriage upon which the platen ismounted, a stencil card holder on the carriage, and means on thecarriage for so shifting said holder relatively to the carriage as tomove a stencil card held in the holder bodily edgewise across theprinting line of the platen first in one direction and then in theopposite direction to two predetermined limits of such edgewise movementand to move said card bodily facewise away from the platen as the cardapproaches each of said two limits of its edgewise movement.

6. A stencil card typing machine comprising a platen carriage, a platenon the carriage, type carriers coactive with the platen for typing astencil card, means on the carriage for feeding Ia carbon web about theplaten with its inked face "outward at the printing line of the platen,and

means on the carriage for supporting a stencil card for edgewiseshifting movements of the kcard inopposite directions relatively to theplaten poses set forth.

7. A stencil car`d typing machine comprising type carriers having upperand lower case types, means for positioning a stencilv card for'initialtyping action of the type carriers upon the upper frame portion of thecard and for line spacing the card for typing action of the typecarriers upon the window portion of the card, case shifting means andribbon shifting means controlled by said first-mentioned means forautomatically conditioning the machine for typing with upper casecharacters and with types striking the card through an inked ribbon whenthe card is positioned for initial typing upon its upper frame portionand for automatically conditioning the machine for direct impact of thetypes with the card and normal coaction of lower case types with thecard while the window portion of the card is positioned for typingthereon, means, including a stencil card backing rotatable platen, forpresenting a card inking element to the reverse face of the card at theprinting line, said last-mentioned means being operable by saidrst-mentioned means to feed said element across the printing line, andmeans for preventing feeding operation of said last-mentioned means bysaid first-mentioned means during movement of a stencil card to initialtyping position and movement of a stencil card from initial typingposition to a position in which the types are operable upon the windowportion of the card.

8. In a stencil card typing machine, the combination of a rotatablymounted platen, a stencil card holder shiftably supported independentlyof the platen for line spacing and reverse movements across the printingline of the platen, means coactive with the platen to feed a stencilcard inking element between the card holder and platen across theprinting line, means for line spacing the card holder and for impartingreverse movement thereto to a predetermined initial card typingposition, one-way driving means for the platen operable by line-spacingactuations of said last-mentioned means to rotate the platen for givingfeed movement to said inklng element, and means for automaticallypreventing rotation of the platen by said driving connection during theinitial line-spacing movement of the card holder from said predeterminedinitial card typing position of the holder.

9. A front strike typewriting machine for typing stencil cardscomprising a rotary cardbacking platen, a stencil card holder, meansconnected with said holder to move the same relatively to the platendownward and upward in front of the platen transversely of the printingline of the platen to and from a predetermined maximum lowered positionof the holder, means including said platen for feeding a card inkingelement transversely of the printing line and between the platen andcard holder, a lone-way platen driving connection between said cardholder moving means and said platen to rotate the platen to feed saidinking element during upward movements of the holder, and means forautomatically interrupting said driving connection while the card holderis lowered below a predetermined level above its maximum loweredposition.

10. A typewriting machine comprising a stencil card holder, a rotarycard-backing platen, type bars coactive with said platen for typing acard held in said holder, a shiftable case-changing segment on whichsaid type bars are supported for printing and retractive movements,manually operable means for shifting the card holder back and forthacross the printing line of the platen between a card inserting andremoving position and a position for initial typing of a card, means forautomatically shifting the segment to upper case position when the cardholder is moved into said initial card typing position and restoring thesegment to lower case position when said holder is moved out of saidposition, and means, including said platen, for feeding a stencil cardinking element transversely of the printing line of the platen betweenthe card holder and platen, said last-mentioned means being operable bysaid manually operable means to feed said element only during movementof the card holder toward its said card inserting and removing positionand only after a predetermined extent of movement of said holder fromits said position for initial card typing.

11. A typewriting machine comprising a stencil card holder, meansincluding a card backing platen for feeding a card inking elementbetween the holder -and platen transversely of the printing line of theplaten, manually operable means for reciprocating the card holderrelatively to platen to and from a fixed initial card typing position,means for automatically presenting a sec- A ond card inkingA elementover the printing point with the card holder interposed between saidelement and the platen while the holder is in said initial cardtypingposition and for holding said element retracted from over theprinting point in all other positions of the holder, and meanscontrolled by said manually operable means for automatically actuatingthe feeding means for the first mentioned inking element to feed saidelement only during movement of the card holder from its said initialcard typing position and only after said holder has been moved a fixeddistance from said initial card typing position.

l2. In a stencil card typing machine, the Vcmbination of a rotarycard-backing platen, a stencil card holding frame, means for shiftingsaid frame edgewise thereof relative to the platen across the printingline of the platen, stop means for limiting the extent of edgewisemovement of` said frame in one direction to determine an initial cardtyping position of the frame, said frame shifting means including handleoperated line spacing means for shifting the frame step by step from itsinitial card typing position, means including said platen for linespacing a card inking carbon web across the printing line of the platenbetween said frame and platen, said lastmentioned line-spacing meansbeing operable by the first-mentioned line-spacing means to line spacethe carbon web, and means for automatically disabling the line-spacingmeans for the carbon'web when the frame is shifted to initial cardtyping position and maintaining said linespacing means in disabledcondition until the frame has been given an initial line spacing stepfrom its said initial card typing position.

13. A stencil card typing machine comprising a main frame, a letter feedcarriage mounted on said main frame, a card backing platen on saidcarriage substantially midway the ends of the carriage, a stencil cardholder adapted to receive said platen, and manually operable card holdersupporting and shifting means on the carriage adpted'to shift the cardholder edgewise in opposite directions cross the printing line of theplaten between a card inserting and removing position and a position forinitial typing of a card and also adapted to shift said holder facewisetoward the platen into platen receiving position when the holder isshifted edgewise out of each of said first-mentioned positions andretract the holder from platen receiving position as the holdrage, meansrectilinearly slidable on the carriage er approaches each of saidfirst-mentioned positions. 14; A front-strike typewriting machine fortyping stencil cards, comprising a card holder adapted to support astencil card in flat condition for typingfand having an opening thereinfor ex.- posing opposite faces of a card held therein to a --c'a'rdbacking platen and types for typing the card, and means for shiftingsaid holder bodily edgewise up and down across the printing line of themachine and bodily facewise fore and aft of the machine, said meansbeing adapted to shift t the holder facewise toward the rear of the ma-,chine and maintain it in a predetermined rearwardly shifted portionduring an intermediate portion of its up and down edgewse shiftingmovements and to shift the holder facewise toward the front of themachine and hold it forwardly shifted during the end portions of its upand down movements, whereby a flat stencil cardfwith a stencil paperportioniriset in a. frame portion of the card may have its inset stencilpaper portion closely bacl-Vred by a platen shorter than the'length ofthe frame portion of the card while said inset portion of the ycard ispresented opposite the printing line.

15.'A front-strike typewritlng machinehavingga letter-feed carriage, aplaten on4 the car-v 1 wardly.

fore and aft of the machine relatively to the platen, a card holderslidably guided on said means to move up and down perpendicularly to thepath of sliding movement of said means and adapted to support a stencilcard in flat condition to shift therewith across the printing line ofthe platen with one face of the card toward the platen, and meansforsliding said card holder up and down on said slidable vmeans and slidingsaid slidable means rst -rearwardly and then forwardly of the machineduring boththeup and down sliding movements of the card holder.

16. A typewriting machine as claimed in claim l5 in which 'saidrectilinearly slidable means is .spring-urged rearwardly and ispositively driven forwardly. v

17. yA typing machine as claimed in claim 15 in which the slidableguiding means for the card holder is spring urged rearwardly, andmanually operable means mounted on the carriage to oscillate about theplaten axis coactive with means mounted on the card holder to shifttherewith for .positively moving the card holder up and down andpositively moving said guiding means for- CARL GABRILSON.

